[Archive] Error Domain=NSCocoaErrorDomain Code=3840 “Invalid value around line 1, column 0

Embedded Wallets (Web3Auth)
1

:classical_building: Archived Content from Web3Auth Community

This topic was originally posted by dev16 on 9/11/2023.
This content has been migrated from our previous community forum to preserve valuable discussions.

Description of the problem: In an iOS client, I am using the SFA (Secure Field Authorization) method from web3Auth to obtain a public-private key pair. Sometimes it is successful, but sometimes it fails.
code：

    @objc class func getPrivateKeyInfo(idToken: String) async -> [String: Any]? {
        let jwt = try? decode(jwt: idToken)
        let verifierId = jwt?.claim(name: "open_id").string

    let authArgs = SingleFactorAuthArgs(network: TorusNetwork.TESTNET)
    let singleFactoreAuth = SingleFactorAuth(singleFactorAuthArgs: authArgs)
    let loginParams = LoginParams(verifier: SPARKLE_VERIFIER, verifierId: verifierId ?? "", idToken: idToken)
    
    do {
        let torusKey = try await singleFactoreAuth.getKey(loginParams: loginParams)
        let privateKey = torusKey.getPrivateKey()
        let publicAddress = torusKey.getPublicAddress()
        
        var infoDic: [String: String?] = [:]
        if (!privateKey.isEmpty) {
            infoDic["privateKey"] = privateKey
        }
        
        if (!publicAddress.isEmpty) {
            infoDic["publicAddress"] = publicAddress
        }
        
        print("Web3AuthInterface getPrivateKeyInfo success.")
        return infoDic as [String : Any]
    } catch {
        print("Web3AuthInterface getPrivateKeyInfo fail, error:\(error).")
        return nil
    }
}

The parameter “id_token” is：
eyJhbGciOiJSUzI1NiIsImtpZCI6InVuaVBhc3NfMjAyMzA1MTYiLCJ0eXAiOiJKV1QifQ.eyJvcGVuX2lkIjoiZDkxYWZjNTYtZjBlYy00YzViLThhNjAtMTMzNWQ5YWQ1M2FlIiwiaXNzIjoic3BhcmtsZSIsImV4cCI6MTY5NDQzMDM4MCwibmJmIjoxNjk0NDIzMTgwLCJpYXQiOjE2OTQ0MjMxODB9.pAt79GkaTVFqgFWB53qNf0DFaT7wVPTgetKHIYkL3uHtGPjnZQaMayZIE_KG1B-wrwfz109j0Hi4sL_1akzcf0O2elPgFMtwRCj0E80kPBKy0dXu8lg-KAtZf1B8vk_RhgN1fo6i-D7C-uiUC_GcygVFY4_EZ2MIpJQMTIv5VFFH_8BnHg_CRcxN092bqbONNC1t8DSTcXwhatiON4zIyF6xpq8vayDkKPuiKvu_ERU7tXxK6ZEfubcgCFhBTs261P5Qum9n8jC6KCunfboa-d4GQUkwTp_k3kwPuXa8f0us37BvO2tKVa-b0XkLDm2h7wpv9660xYon9_ERoXbJFg

error msg：
error:dataCorrupted(Swift.DecodingError.Context(codingPath: [], debugDescription: “The given data was not valid JSON.“, underlyingError: Optional(Error Domain=NSCocoaErrorDomain Code=3840 “Invalid value around line 1, column 0.” UserInfo={NSDebugDescription=Invalid value around line 1, column 0., NSJSONSerializationErrorIndex=0})))

it indicate the JSON is invalid from error msg. but it seems ok after I parse it. so how can I solve this problem? sometimes it goes well, sometimes it fail. any possiblility from the network?

2

@dev16 Thanks for reaching out.

I will review this and get back with an update.

3

A few questions here:

  1. May I know how you obtained the token? The idtoken displays an invalid signature as per (jwt.io decoded)
  1. Have you followed the installation as per Installing SFA iOS SDK | Documentation | Web3Auth
  2. Can you share these fields:
  • Verifier Identifier:
  • JWT Verifier ID:
  • JWK Endpoint:
  • JWT Validation:
  • SDK version:
  1. Which example are you using to guide your code? We have a few available here.
4
  1. I obtain the idToken from my server. The idtoken displays Signature Verified as per (jwt.io decoded)
    I entered the public key：
    -----BEGIN PUBLIC KEY-----
    MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo
    4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u
    +qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyeh
    kd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ
    0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdg
    cKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbc
    mwIDAQAB
    -----END PUBLIC KEY-----

The payload exp field is set to be valid for 2 hours.

1
11253×937 163 KB

2
21293×934 147 KB

  1. I have followed the installation as per Installing SFA iOS SDK | Documentation | Web3Auth

3.My web3Auth dashboard setting:

4
41420×651 121 KB

loginParams
verifier:Sparkle-Custom-Auth-01
verifierId:open_id
JWTDecode version:3.0.0

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52088×466 91.5 KB

4.I refer to this example code.

democode
democode1920×1238 177 KB

5

I have forwarded your issue to our Dev team and we will get back with further updates.

6

Thanks, look forward to your reply.

7

@dev16 Does it fails rarely or ocassionally? Any observation on that?

8

@dev16 Could you please reply with the information requested?

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